Final Fantasy IX Walkthrough - Four Shrines
Now it's time to take flight, and locate the four sacred shrines in Gaia:

Water Shrine: This one is easy, since it's directly south of Ipsen's Castle
on the Forgotten Continent. It's out in the sea, and is
surrounded by a large whirlpool, and when you hover above
it with the Hilde Garde 3, it says "Water Shrine". Here, you
will have Dagger and Eiko enter this shrine.

Fire Shrine: This one is located on the Lost Continent, northeast of Esto Gaza
and Mount Gulug. It's really easy to spot, since it's a fiery
volcano which is surrounded by ice. Here, you will drop off
Freya and Amarant.

Wind Shrine: This shrine is also on the Forgotten Continent, to the southeast
of the large continent. It's hidden within a narrow canyon, and
has some large vines covering it up, but once you get near it,
you'll know it's the Wind Shrine. Here, you'll drop off Vivi and
Steiner.

Earth Shrine: This is the shrine you and Quina Qu will be entering, and it's
located on the Outer Continent, on the grassy plains. It has
a few small peaks surrounding it, and the ground shakes when
you get near it. It's to the southeast of the Iifa Tree, and
is on the southeast tip of the continent.